Multiple chamber tire



y 1, 1934- c. G. J. BRIQUET ET AL 1,957,384

MULTIPLE CHAMBER TIRE Filed April 14. 1931 Patented May 1, 1934 UNHTEDSTATES FFICE TE'T MULTIPLE CHAMBER TIRE Application April 14, 1931,Serial No. 530,121 In Belgium January 22, 1931 1 Claim.

This invention relates to multiple chamber tires, and it comprises anouter casing, an inner casing composed of a series of relatively smallpockets, of rubber, abutting against one another,

5 fittings in the abutting walls of adjacent pockets throughout theseries, the successive fittings being out of line with one another andeach fitting having a fine perforation permitting slow leakage frompocket to pocket, whereby upon defiation of one pocket by reason of apuncture, the walls or" the adjacent unpunctured pockets may moveagainst the walls of the intermediate sections and the latter Walls willclose the perforations in the fittings of said adjacent sections. In theaccompanying drawing, a indicates an outer tire or casing and 12indicates an inner tube or casing of rubber, divided by walls orpartitions 1) into a series of relatively small pockets, several ofwhich are indicated at l, 2, 4 and 5. Extending through the adjacentwalls of adjacent pockets are eyelets, indicated at e, e, 6 e and 6 eacheyelet having a relatively small opening to permit slow leakage of airfrom pocket to pocket. The eyelets in the opposing walls of each pocketare out of line with one another, as shown.

In operation, in case of a puncture in one pocket, and consequentdeflation of that pocket, as for instance the pocket 2, the pressure inthe other pockets of the series will cause the pocket 1 to deflateslowly through eyelet e and the pressure in the tube will cause theeyelets e and e to approach and be pressed against the partition betweenthe pockets 1 and which will close the perforations in the eyelets e ande and prevent further leakage from the tire.

If desired, a signalling device 0 may be connected through tubing 7 anda suitable fitting 8 to a pocket in the inner tube, to indicate lowpressure, but this device is not a part of the invention claimed in thisapplication and therefore need 5 not be further described.

What I claim is:

A vehicle tire compris'ng an outer casing, an inner casing comprising aseries of relatively small closed pockets, of rubber, abutting againstone another, fittings extending through the abutting walls of adjacentpockets throughout the series, each fitting having a fine perforationtherethrough permitting slow leakage of air from pocket to pocket, andthe fitting in one wall or" each pocket being out of line with thefitting in the opposing wall, whereby, upon puncture and deflation ofone pocket, the walls of the adjacent unpunctured pockets, havingfittings with alined perforations, may move against walls of theintermediate sections and the latter walls will close said alinedperforations.

